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As a person of faith, the Bible, would be my answer as well. I'll expound just a bit and say, God's Word has done more than "change my life", it has helped to define it.

Very well said, my friend.

I skipped to the end.
We're all doomed. Except for:
Your name here.*
Offer is limited.
Restrictions may apply.

Offer revoked.

Cute.
 
Best advice ever, from my father when I left home to join the navy at 17.
"If you ever find yourself down and out and maybe needing a hand, check out the end of your arm".
 
Though the lessons within might seem obvious today, when I first read Ishmael 25 years ago it significantly changed my perspective in a positive direction.

220px-DanielQuinn_Ishmael.jpg
 
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Books that I re-read:

Zen and the Art of Motorcycle Maintenance -- Persig

Twilight of the Idols, Beyond Good and Evil, and The Antichrist -- Nietzsche

On War -- Clausewitz

The Life of Castruccio Castracani, and The Prince -- Machiavelli

They're all important to me for different reason and were more or less important at different times in my life.
 
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